Patents by Inventor John B. Watkins

John B. Watkins has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4261501
    Abstract: An insulated, decorative hot drink cup for hot coffee or the like is provided which can be grasped and drunk from without fear that the user's fingers will be burned. The cup includes an inner, integral, synthetic resin cup member having a series of spaced, exterior, longitudinally extending, triangular in cross section ribs on the sidewall thereof, and an outer decorative paper overwrap permanently applied over and in contact with the ribs. This structure defines a series of discrete, juxtaposed, dead air chambers or cells in the cup assembly sidewall for maximum heat insulation, and the thermally minimal, essentially line contact between the rib apices and overwrap enhances this effect. An uppermost circumferential bead formed on the cup member provides a further seal and prevents passage of liquid between the overwrap and member sidewall.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: April 14, 1981
    Assignee: Hallmark Cards Incorporated
    Inventors: John B. Watkins, Glen N. Black